Cosmetic contact lens for color blindness

a contact lens and color blindness technology, applied in the field of soft corneal contact lenses, can solve the problems of unfavorable color vision blindness, unfavorable eye appearance, and unfavorable eye color vision, and achieve the effect of correcting color vision blindness
US20210271109A1Pending Publication Date: 2021-09-02ALCON INC
0 Cites 1 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ALCON INC
Publication Date
2021-09-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention is directed to a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising a dye containing layer which is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: an annular pattern of a color and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern
Need to check novelty before this filing date? Find Prior Art

Description

[0001] The present invention generally relates to a cosmetic contact lens for color blindness with a cosmetic pattern around the optic zone to mask this appearance to create the appearance of blending in the corrective color with cosmetic iris pattern. The present invention also relates to a method for making cosmetic contact lens for color blindness.BACKGROUND OF THE INVENTION

[0002] The prior art US499817 describes a soft corneal contact lens which improves the color discrimination of a color-blind person when applied to one eye only. Said lens comprising a clear, soft, corneal contact lens having on the central portion of its exterior surface a thin layer of red coloration characterized as being insoluble in water but soluble in aromatic hydrocarbon; light passing through the red layer having substantially all its transmissions above about 6000 Å; said red layer continuously covering substantially all the light normally admitted to the pupil of the eye during the daytime and being i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More